KotDB: Good point about the rating medians, but that could be simply fixed by adjusting ratings for each game.

Personally I don't like crowded backgammon (takes too long) so I'll never win the pentathlon. Problem is many people only play 1-2 variants.

As far as the pentathlon analogy goes, it would really only work if there were 5 very different games, but these are all essentially the same.